Android Open Source - micswitch Mic Switch Activity

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License

The source code is released under:

This software is provided 'as-is', without any express or implied warranty. In no event will the author(s) be held liable for any damages arising from the use of this software. Permission is granted...

Java Source Code

/*
 *  Copyright (C) 2011 Tristan Heaven <tristanheaven@gmail.com>
 */*  w w w.  j a  va  2 s  . c  o  m*/
 *  This software is provided 'as-is', without any express or implied
 *  warranty.  In no event will the author(s) be held liable for any damages
 *  arising from the use of this software.
 *
 *  Permission is granted to anyone to use this software for any purpose,
 *  including commercial applications, and to alter it and redistribute it
 *  freely, subject to the following restrictions:
 *
 *  1. The origin of this software must not be misrepresented; you must not
 *     claim that you wrote the original software. If you use this software
 *     in a product, an acknowledgment in the product documentation would be
 *     appreciated but is not required.
 *  2. Altered source versions must be plainly marked as such, and must not be
 *     misrepresented as being the original software.
 *  3. This notice may not be removed or altered from any source distribution.
 *
 */

package tristanheaven.micswitch;

import java.io.DataOutputStream;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.CheckBox;
import android.widget.ScrollView;
import android.widget.TextView;

public class MicSwitchActivity extends Activity {
  @Override
  public void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    if (!programCheck()) {
      appendOutput("Error: Can't continue\n");
      getCheckBox().setClickable(false);
      return;
    }
    configCheck();
  }

  private CheckBox getCheckBox() {
    return (CheckBox) findViewById(R.id.checkBox);
  }

  private ScrollView getScrollView() {
    return (ScrollView) findViewById(R.id.scrollView);
  }

  private TextView getTextViewOutput() {
    return (TextView) findViewById(R.id.textViewOutput);
  }

  private final OnClickListener onCheckBoxClick = new OnClickListener() {
    public void onClick(final View v) {
      final CheckBox CheckBox = (CheckBox) v;
      CheckBox.setClickable(false);
      getTextViewOutput().setText("");
      editConfig(CheckBox.isChecked());
      configCheck();
    }
  };

  private void appendOutput(final String str) {
    final TextView TextViewOutput = getTextViewOutput();
    TextViewOutput.append(str);

    final ScrollView ScrollView = getScrollView();
    ScrollView.post(new Runnable() {
      public void run() {
        ScrollView.fullScroll(View.FOCUS_DOWN);
      }
    });
  }

  private boolean programCheck() {
    appendOutput("Checking for required programs:\n");

    appendOutput("\tbusybox... ");
    if (doExec("which busybox", false) == 0)
      appendOutput("yes\n");
    else {
      appendOutput("no\n");
      return false;
    }

    appendOutput("\tsu... ");
    if (doExec("which su", false) == 0)
      appendOutput("yes\n");
    else {
      appendOutput("no\n");
      return false;
    }

    return true;
  }

  private void configCheck() {
    final CheckBox CheckBox = getCheckBox();

    appendOutput("Checking build.prop...\n");
    if (doExec("grep -q '^media.a1026.enableA1026=1$' /system/build.prop",
        false) == 0) {
      CheckBox.setChecked(true);
      CheckBox.setOnClickListener(onCheckBoxClick);
      CheckBox.setClickable(true);
      appendOutput("OK - A1026 is enabled\n");
    } else if (doExec(
        "grep -q '^media.a1026.enableA1026=0$' /system/build.prop",
        false) == 0) {
      CheckBox.setChecked(false);
      CheckBox.setOnClickListener(onCheckBoxClick);
      CheckBox.setClickable(true);
      appendOutput("OK - A1026 is disabled\n");
    } else {
      CheckBox.setClickable(false);
      appendOutput("Error: Unsupported Device\n");
    }
  }

  private boolean configIsWritable() {
    appendOutput("Checking whether build.prop is writable... ");

    if (doExec("touch /system/build.prop", true) == 0) {
      appendOutput("yes\n");
      return true;
    }

    appendOutput("no\n");
    return false;
  }

  private boolean remountSystem(final boolean rw) {
    if (rw) {
      appendOutput("Remounting /system read-write... ");
      if (doExec("mount -o remount,rw /system", true) == 0) {
        appendOutput("OK\n");
        return true;
      }

      appendOutput("failed\n");
      return false;
    }

    appendOutput("Remounting /system read-only... ");
    if (doExec("mount -o remount,ro /system", true) == 0) {
      appendOutput("OK\n");
      return true;
    }

    appendOutput("Failed\n");
    return false;
  }

  private void editConfig(final boolean enable) {
    boolean remounted = false;

    if (!configIsWritable())
      if (remountSystem(true)) {
        remounted = true;
        if (!configIsWritable()) {
          appendOutput("Error: Failed to write build.prop\n");
          remountSystem(false);
          return;
        }
      } else {
        appendOutput("Error: Failed to write build.prop\n");
        return;
      }

    if (enable) {
      appendOutput("Enabling A1026... ");
      if (doExec(
          "sed -i '/^media.a1026.enableA1026=/s:=0:=1:' /system/build.prop",
          true) == 0)
        appendOutput("OK\n");
      else
        appendOutput("failed\n");
    } else {
      appendOutput("Disabling A1026... ");
      if (doExec(
          "sed -i '/^media.a1026.enableA1026=/s:=1:=0:' /system/build.prop",
          true) == 0)
        appendOutput("OK\n");
      else
        appendOutput("failed\n");
    }

    if (remounted)
      remountSystem(false);
    else
      appendOutput("Leaving /system read-write (as we found it)\n");
  }

  private int doExec(final String command, final boolean su) {
    int status = 0;
    Process p = null;
    DataOutputStream dos = null;

    try {
      if (su)
        p = Runtime.getRuntime().exec("su");
      else
        p = Runtime.getRuntime().exec("sh");

      dos = new DataOutputStream(p.getOutputStream());
      dos.writeBytes("exec " + command + "\n");
      dos.flush();
      status = p.waitFor();
    } catch (final Exception e) {
      status = 1;
    } finally {
      try {
        if (dos != null)
          dos.close();
        p.destroy();
      } catch (final Exception e) {
        ;
      }
    }
    return status;
  }
}

Java Source Code List

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